An example of evolutionary divergence is best characterized by Darwin's observation of ____
a. fossils along the coast of Argentina
b. body armor similarities between armadillos and fossilized glyptodonts
c. differences in appearance between nutria and beaver
d. differences in bill shape and food habits of finches
e. genotypic and phenotypic variability of species
ANSWER: d
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Cell biology emerged from which of the following fields of biology?
A) biochemistry B) cytology C) genetics D) all of the above E) none of the above
Half of all human tumor cells have been discovered to contain a mutation in the which of the following genes?
a. p21 b. p34 c. p47 d. p53
What type of mutation occurred in the following?
Normal allele GGAAUGAAACAGGAACCC Mutant allele GGAAUGAAAUCAGGAACCC insertion substitution deletion frameshift
Humans convert approximately ________ of the energy stored in food to useful work
A) 22% B) 34% C) 55% D) 99.9%